Fastener.



No. 646,738. v Patented Apr. 3, I900.

4 F. G. INGALLS.

FASTENEB.

, (Application filed Nov. 80, 1897.) (No Model.)

WITNESSES.- INVENTOR ATTORNEYJ UNITED STATES PATENT OFFICE.

FREDERIO CYRUS INGALLS, OF UTIOA, NEW YORK.

FASTENER.

SPECIFICATION forming part of Letters Patent No. 646,738, dated April 3,1900 Application filed November 80, 1897. Serial No. 660,189. (Nomodel.)

To all whomit may concern.-

Be it known that I, FREDERIC CYRUS IN- GALLS, a citizen of the UnitedStates, and av resident of Utica, county of Oneida, and State of NewYork, have invented certain new and useful Improvements in Fasteners, ofwhich the following is a specification, reference being had to theaccompanying drawings, forming a part thereof, in which similar lettersof reference indicate corresponding parts.

This invention relates to improvements in fasteners; and the objectthereof is to provide a simple, inexpensive, convenient, and operativedevice of this character which is adapted for connecting or fasteningtogether by hand or with a hammer and without the aid of auxiliarymachinery a plurality of sheets of paper or other substance requiringsecure, attachment with each other.

The invention will be hereinafter fullyfdescribed, and specifically setforth in the annexed claim. g

In the accompanying drawings, forming part of this specification, Figure1 is a side elevation of the device, showing the two members comprisingthe same detached, the outer member being in longitudinal sectionalelevation; and Fig. 2 is a similar view showing the two members intelescopic connection.

In the practice of my invent-ion I provide two members or sections A andB, the crosssection of which may be either of circular or other adaptedform, the member B being of a size adapted for telescopic connectionwithin the tubular member A and for securing fric tional contacttherewith, whereby the two said members will not be disengaged from eachother accidentally or loosened by effect of use after they have beenassembled. The members A and B may both be tubular, or in the case oflarge-sized fasteners the section B may be made solid to add strength tothe device. The outer section A of the fastener is provided at one endwith an annular projection, flange, or head a, and the inner section Bis provided with a similar projection 19. Each of these said sections'isof tapering contour, the size of the outer section A increas ing fromits annular projection and the size of the inner section B decreasingfrom its annular projection, whereby the two said sections aremaintained in secure frictional engagement when they are assembled, asillustrated by Fig. 2 of the drawings.

In the operation and use of the device a hole is made through theseveral sheets or substances to be connected by means of a hand-punch,the hole being of a cross-section equal to and of the same shape as theouter section A of the fastener. This said section of the fastener isthen passed through the hole formed in the sheets or substances to beconnected, after which the inner section is driven tightly within theouter section,whereby they are held securely and permanently togetherand the sheets or substances connected are prevented from beinglaterally displaced by means of the annular flanges or the-solid heads aand b.

' Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is 1 A fastener, comprising one outer tubehaving an annular projection around its outer end, the cross-section ofthe inner Walls of which tube is of circular or analogous form, slightlyincreasing from the annular projection toward the opposite end, and aninner tube also having an annular projection around its outer end,and-having the crosssection of its outer walls of similar form to thatof the inner walls of the outer tube,

slightly diminishing from its flange or head toward the opposite end,and being adapted for telescoping into said outer tube and of beingpermanently maintained therein by frictional engagement, substantiallyas shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in pres ence of two witnesses, this 20th day of November, 1897.

.FREDERIO CYRUS INGALLS. Witnesses:

' FREDERIC O. INGALLS, J r.,

-HENRY S. INGALLS.

